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Horseweed

Erigeron canadensis

Introduced

Horseweed
Andrey Zharkikh from Salt Lake City, USA · CC BY 2.0

Overview

Erigeron canadensis is an annual plant native throughout most of North America and Central America. It is also widely naturalized in Eurasia and Australia. Common names include horseweed, Canadian horseweed, Canadian fleabane, coltstail, marestail, and butterweed. It was the first weed to have developed glyphosate resistance, reported in 2001 from Delaware.

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Sources

  1. Wikipedia (EN): Erigeron canadensis — CC BY-SA 4.0